diff --git a/packages/block-library/src/paragraph/deprecated.js b/packages/block-library/src/paragraph/deprecated.js
index c3f18db62d62c..d7871b8854ca3 100644
--- a/packages/block-library/src/paragraph/deprecated.js
+++ b/packages/block-library/src/paragraph/deprecated.js
@@ -12,6 +12,7 @@ import {
 } from '@wordpress/element';
 import {
 	getColorClassName,
+	getFontSizeClass,
 	RichText,
 } from '@wordpress/block-editor';
 
@@ -61,6 +62,54 @@ const blockAttributes = {
 };
 
 const deprecated = [
+	{
+		supports,
+		attributes: blockAttributes,
+		save( { attributes } ) {
+			const {
+				align,
+				content,
+				dropCap,
+				backgroundColor,
+				textColor,
+				customBackgroundColor,
+				customTextColor,
+				fontSize,
+				customFontSize,
+				direction,
+			} = attributes;
+
+			const textClass = getColorClassName( 'color', textColor );
+			const backgroundClass = getColorClassName( 'background-color', backgroundColor );
+			const fontSizeClass = getFontSizeClass( fontSize );
+
+			const className = classnames( {
+				'has-text-color': textColor || customTextColor,
+				'has-background': backgroundColor || customBackgroundColor,
+				'has-drop-cap': dropCap,
+				[ fontSizeClass ]: fontSizeClass,
+				[ textClass ]: textClass,
+				[ backgroundClass ]: backgroundClass,
+			} );
+
+			const styles = {
+				backgroundColor: backgroundClass ? undefined : customBackgroundColor,
+				color: textClass ? undefined : customTextColor,
+				fontSize: fontSizeClass ? undefined : customFontSize,
+				textAlign: align,
+			};
+
+			return (
+				<RichText.Content
+					tagName="p"
+					style={ styles }
+					className={ className ? className : undefined }
+					value={ content }
+					dir={ direction }
+				/>
+			);
+		},
+	},
 	{
 		supports,
 		attributes: {
diff --git a/packages/block-library/src/paragraph/edit.js b/packages/block-library/src/paragraph/edit.js
index 021a7369f3422..c40fae904906f 100644
--- a/packages/block-library/src/paragraph/edit.js
+++ b/packages/block-library/src/paragraph/edit.js
@@ -163,6 +163,7 @@ class ParagraphBlock extends Component {
 						'has-text-color': textColor.color,
 						'has-background': backgroundColor.color,
 						'has-drop-cap': dropCap,
+						[ `has-text-align-${ align }` ]: align,
 						[ backgroundColor.class ]: backgroundColor.class,
 						[ textColor.class ]: textColor.class,
 						[ fontSize.class ]: fontSize.class,
@@ -171,7 +172,6 @@ class ParagraphBlock extends Component {
 						backgroundColor: backgroundColor.color,
 						color: textColor.color,
 						fontSize: fontSize.size ? fontSize.size + 'px' : undefined,
-						textAlign: align,
 						direction,
 					} }
 					value={ content }
diff --git a/packages/block-library/src/paragraph/save.js b/packages/block-library/src/paragraph/save.js
index b4c3b7c02d083..b2c1f47a4f32a 100644
--- a/packages/block-library/src/paragraph/save.js
+++ b/packages/block-library/src/paragraph/save.js
@@ -34,6 +34,7 @@ export default function save( { attributes } ) {
 		'has-text-color': textColor || customTextColor,
 		'has-background': backgroundColor || customBackgroundColor,
 		'has-drop-cap': dropCap,
+		[ `has-text-align-${ align }` ]: align,
 		[ fontSizeClass ]: fontSizeClass,
 		[ textClass ]: textClass,
 		[ backgroundClass ]: backgroundClass,
@@ -43,7 +44,6 @@ export default function save( { attributes } ) {
 		backgroundColor: backgroundClass ? undefined : customBackgroundColor,
 		color: textClass ? undefined : customTextColor,
 		fontSize: fontSizeClass ? undefined : customFontSize,
-		textAlign: align,
 	};
 
 	return (
diff --git a/packages/e2e-tests/fixtures/blocks/core__cover.html b/packages/e2e-tests/fixtures/blocks/core__cover.html
index bea1456539066..00094d59af0fa 100644
--- a/packages/e2e-tests/fixtures/blocks/core__cover.html
+++ b/packages/e2e-tests/fixtures/blocks/core__cover.html
@@ -5,7 +5,7 @@
 >
 	<div class="wp-block-cover__inner-container">
 		<!-- wp:paragraph {"align":"center","placeholder":"Write title…","fontSize":"large"} -->
-		<p style="text-align:center" class="has-large-font-size">
+		<p class="has-text-align-center has-large-font-size">
 			Guten Berg!
 		</p>
 		<!-- /wp:paragraph -->
diff --git a/packages/e2e-tests/fixtures/blocks/core__cover.json b/packages/e2e-tests/fixtures/blocks/core__cover.json
index 93776fce2cdc0..2092e1fc58a1a 100644
--- a/packages/e2e-tests/fixtures/blocks/core__cover.json
+++ b/packages/e2e-tests/fixtures/blocks/core__cover.json
@@ -22,7 +22,7 @@
                     "fontSize": "large"
                 },
                 "innerBlocks": [],
-                "originalContent": "<p style=\"text-align:center\" class=\"has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>"
+                "originalContent": "<p class=\"has-text-align-center has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>"
             }
         ],
         "originalContent": "<div\n\tclass=\"wp-block-cover has-background-dim-40 has-background-dim\"\n\tstyle=\"background-image:url(data:image/jpeg;base64,/9j/2wBDAAMCAgICAgMCAgIDAwMDBAYEBAQEBAgGBgUGCQgKCgkICQkKDA8MCgsOCwkJDRENDg8QEBEQCgwSExIQEw8QEBD/yQALCAABAAEBAREA/8wABgAQEAX/2gAIAQEAAD8A0s8g/9k=)\"\n>\n\t<div class=\"wp-block-cover__inner-container\">\n\t\t\n\t</div>\n</div>"
diff --git a/packages/e2e-tests/fixtures/blocks/core__cover.parsed.json b/packages/e2e-tests/fixtures/blocks/core__cover.parsed.json
index d682ebabe0b9f..c38b616c41d0d 100644
--- a/packages/e2e-tests/fixtures/blocks/core__cover.parsed.json
+++ b/packages/e2e-tests/fixtures/blocks/core__cover.parsed.json
@@ -14,9 +14,9 @@
                     "fontSize": "large"
                 },
                 "innerBlocks": [],
-                "innerHTML": "\n\t\t<p style=\"text-align:center\" class=\"has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>\n\t\t",
+                "innerHTML": "\n\t\t<p class=\"has-text-align-center has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>\n\t\t",
                 "innerContent": [
-                    "\n\t\t<p style=\"text-align:center\" class=\"has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>\n\t\t"
+                    "\n\t\t<p class=\"has-text-align-center has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>\n\t\t"
                 ]
             }
         ],
diff --git a/packages/e2e-tests/fixtures/blocks/core__cover.serialized.html b/packages/e2e-tests/fixtures/blocks/core__cover.serialized.html
index 0539f03f168f8..5c22f650550e6 100644
--- a/packages/e2e-tests/fixtures/blocks/core__cover.serialized.html
+++ b/packages/e2e-tests/fixtures/blocks/core__cover.serialized.html
@@ -1,6 +1,6 @@
 <!-- wp:cover {"url":"data:image/jpeg;base64,/9j/2wBDAAMCAgICAgMCAgIDAwMDBAYEBAQEBAgGBgUGCQgKCgkICQkKDA8MCgsOCwkJDRENDg8QEBEQCgwSExIQEw8QEBD/yQALCAABAAEBAREA/8wABgAQEAX/2gAIAQEAAD8A0s8g/9k=","dimRatio":40} -->
 <div class="wp-block-cover has-background-dim-40 has-background-dim" style="background-image:url(data:image/jpeg;base64,/9j/2wBDAAMCAgICAgMCAgIDAwMDBAYEBAQEBAgGBgUGCQgKCgkICQkKDA8MCgsOCwkJDRENDg8QEBEQCgwSExIQEw8QEBD/yQALCAABAAEBAREA/8wABgAQEAX/2gAIAQEAAD8A0s8g/9k=)"><div class="wp-block-cover__inner-container"><!-- wp:paragraph {"align":"center","placeholder":"Write title…","fontSize":"large"} -->
-<p style="text-align:center" class="has-large-font-size">
+<p class="has-text-align-center has-large-font-size">
 			Guten Berg!
 		</p>
 <!-- /wp:paragraph --></div></div>
diff --git a/packages/e2e-tests/fixtures/blocks/core__cover__deprecated-1.serialized.html b/packages/e2e-tests/fixtures/blocks/core__cover__deprecated-1.serialized.html
index 8c80c4c53a580..d1a8ceecd39b9 100644
--- a/packages/e2e-tests/fixtures/blocks/core__cover__deprecated-1.serialized.html
+++ b/packages/e2e-tests/fixtures/blocks/core__cover__deprecated-1.serialized.html
@@ -1,5 +1,5 @@
 <!-- wp:cover {"url":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==","id":34} -->
 <div class="wp-block-cover has-background-dim" style="background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==)"><div class="wp-block-cover__inner-container"><!-- wp:paragraph {"align":"center","placeholder":"Write title…","fontSize":"large"} -->
-<p style="text-align:center" class="has-large-font-size"><strong>Cover Image</strong></p>
+<p class="has-text-align-center has-large-font-size"><strong>Cover Image</strong></p>
 <!-- /wp:paragraph --></div></div>
 <!-- /wp:cover -->
diff --git a/packages/e2e-tests/fixtures/blocks/core__cover__deprecated-2.serialized.html b/packages/e2e-tests/fixtures/blocks/core__cover__deprecated-2.serialized.html
index 90849ff27c456..29c4fc38d0776 100644
--- a/packages/e2e-tests/fixtures/blocks/core__cover__deprecated-2.serialized.html
+++ b/packages/e2e-tests/fixtures/blocks/core__cover__deprecated-2.serialized.html
@@ -1,5 +1,5 @@
 <!-- wp:cover {"url":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==","id":34} -->
 <div class="wp-block-cover has-background-dim" style="background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==)"><div class="wp-block-cover__inner-container"><!-- wp:paragraph {"align":"center","placeholder":"Write title…","fontSize":"large"} -->
-<p style="text-align:center" class="has-large-font-size"><strong>Cover Block</strong></p>
+<p class="has-text-align-center has-large-font-size"><strong>Cover Block</strong></p>
 <!-- /wp:paragraph --></div></div>
 <!-- /wp:cover -->
diff --git a/packages/e2e-tests/fixtures/blocks/core__cover__deprecated-3.serialized.html b/packages/e2e-tests/fixtures/blocks/core__cover__deprecated-3.serialized.html
index a85404c31646a..0498afe4a1c8d 100644
--- a/packages/e2e-tests/fixtures/blocks/core__cover__deprecated-3.serialized.html
+++ b/packages/e2e-tests/fixtures/blocks/core__cover__deprecated-3.serialized.html
@@ -1,5 +1,5 @@
 <!-- wp:cover {"url":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==","id":35} -->
 <div class="wp-block-cover has-background-dim" style="background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==)"><div class="wp-block-cover__inner-container"><!-- wp:paragraph {"align":"center","placeholder":"Write title…","fontSize":"large"} -->
-<p style="text-align:center" class="has-large-font-size"><strong>Cover Block</strong></p>
+<p class="has-text-align-center has-large-font-size"><strong>Cover Block</strong></p>
 <!-- /wp:paragraph --></div></div>
 <!-- /wp:cover -->
diff --git a/packages/e2e-tests/fixtures/blocks/core__cover__video-overlay.html b/packages/e2e-tests/fixtures/blocks/core__cover__video-overlay.html
index 1eb26c9730be6..4f603c49dd06d 100644
--- a/packages/e2e-tests/fixtures/blocks/core__cover__video-overlay.html
+++ b/packages/e2e-tests/fixtures/blocks/core__cover__video-overlay.html
@@ -13,7 +13,7 @@
 	</video>
 	<div class="wp-block-cover__inner-container">
 		<!-- wp:paragraph {"align":"center","placeholder":"Write title…","fontSize":"large"} -->
-		<p style="text-align:center" class="has-large-font-size">
+		<p class="has-text-align-center has-large-font-size">
 			Guten Berg!
 		</p>
 		<!-- /wp:paragraph -->
diff --git a/packages/e2e-tests/fixtures/blocks/core__cover__video-overlay.json b/packages/e2e-tests/fixtures/blocks/core__cover__video-overlay.json
index f7e2b42ff234c..8e2486b3bc128 100644
--- a/packages/e2e-tests/fixtures/blocks/core__cover__video-overlay.json
+++ b/packages/e2e-tests/fixtures/blocks/core__cover__video-overlay.json
@@ -23,7 +23,7 @@
                     "fontSize": "large"
                 },
                 "innerBlocks": [],
-                "originalContent": "<p style=\"text-align:center\" class=\"has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>"
+                "originalContent": "<p class=\"has-text-align-center has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>"
             }
         ],
         "originalContent": "<div\n\tclass=\"wp-block-cover has-background-dim-10 has-background-dim\"\n\tstyle=\"background-color:#3615d9\"\n>\n\t<video\n\t\tclass=\"wp-block-cover__video-background\"\n\t\tautoplay\n\t\tmuted\n\t\tloop\n\t\tsrc=\"data:video/mp4;base64,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\"\n\t>\n\t</video>\n\t<div class=\"wp-block-cover__inner-container\">\n\t\t\n\t</div>\n</div>"
diff --git a/packages/e2e-tests/fixtures/blocks/core__cover__video-overlay.parsed.json b/packages/e2e-tests/fixtures/blocks/core__cover__video-overlay.parsed.json
index 4b72e0d4148e7..1a01fe89ce68a 100644
--- a/packages/e2e-tests/fixtures/blocks/core__cover__video-overlay.parsed.json
+++ b/packages/e2e-tests/fixtures/blocks/core__cover__video-overlay.parsed.json
@@ -16,9 +16,9 @@
                     "fontSize": "large"
                 },
                 "innerBlocks": [],
-                "innerHTML": "\n\t\t<p style=\"text-align:center\" class=\"has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>\n\t\t",
+                "innerHTML": "\n\t\t<p class=\"has-text-align-center has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>\n\t\t",
                 "innerContent": [
-                    "\n\t\t<p style=\"text-align:center\" class=\"has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>\n\t\t"
+                    "\n\t\t<p class=\"has-text-align-center has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>\n\t\t"
                 ]
             }
         ],
diff --git a/packages/e2e-tests/fixtures/blocks/core__cover__video-overlay.serialized.html b/packages/e2e-tests/fixtures/blocks/core__cover__video-overlay.serialized.html
index 831388b0182b8..1a40bd5a65f74 100644
--- a/packages/e2e-tests/fixtures/blocks/core__cover__video-overlay.serialized.html
+++ b/packages/e2e-tests/fixtures/blocks/core__cover__video-overlay.serialized.html
@@ -1,6 +1,6 @@
 <!-- wp:cover {"url":"data:video/mp4;base64,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","dimRatio":10,"customOverlayColor":"#3615d9","backgroundType":"video"} -->
 <div class="wp-block-cover has-background-dim-10 has-background-dim" style="background-color:#3615d9"><video class="wp-block-cover__video-background" autoplay muted loop src="data:video/mp4;base64,AAAAHGZ0eXBpc29tAAACAGlzb21pc28ybXA0MQAAAAhmcmVlAAAC721kYXQhEAUgpBv/wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA3pwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAcCEQBSCkG//AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADengAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAcAAAAsJtb292AAAAbG12aGQAAAAAAAAAAAAAAAAAAAPoAAAALwABAAABAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADAAAB7HRyYWsAAABcdGtoZAAAAAMAAAAAAAAAAAAAAAIAAAAAAAAALwAAAAAAAAAAAAAAAQEAAAAAAQAAAAAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAACRlZHRzAAAAHGVsc3QAAAAAAAAAAQAAAC8AAAAAAAEAAAAAAWRtZGlhAAAAIG1kaGQAAAAAAAAAAAAAAAAAAKxEAAAIAFXEAAAAAAAtaGRscgAAAAAAAAAAc291bgAAAAAAAAAAAAAAAFNvdW5kSGFuZGxlcgAAAAEPbWluZgAAABBzbWhkAAAAAAAAAAAAAAAkZGluZgAAABxkcmVmAAAAAAAAAAEAAAAMdXJsIAAAAAEAAADTc3RibAAAAGdzdHNkAAAAAAAAAAEAAABXbXA0YQAAAAAAAAABAAAAAAAAAAAAAgAQAAAAAKxEAAAAAAAzZXNkcwAAAAADgICAIgACAASAgIAUQBUAAAAAAfQAAAHz+QWAgIACEhAGgICAAQIAAAAYc3R0cwAAAAAAAAABAAAAAgAABAAAAAAcc3RzYwAAAAAAAAABAAAAAQAAAAIAAAABAAAAHHN0c3oAAAAAAAAAAAAAAAIAAAFzAAABdAAAABRzdGNvAAAAAAAAAAEAAAAsAAAAYnVkdGEAAABabWV0YQAAAAAAAAAhaGRscgAAAAAAAAAAbWRpcmFwcGwAAAAAAAAAAAAAAAAtaWxzdAAAACWpdG9vAAAAHWRhdGEAAAABAAAAAExhdmY1Ni40MC4xMDE="></video><div class="wp-block-cover__inner-container"><!-- wp:paragraph {"align":"center","placeholder":"Write title…","fontSize":"large"} -->
-<p style="text-align:center" class="has-large-font-size">
+<p class="has-text-align-center has-large-font-size">
 			Guten Berg!
 		</p>
 <!-- /wp:paragraph --></div></div>
diff --git a/packages/e2e-tests/fixtures/blocks/core__cover__video.html b/packages/e2e-tests/fixtures/blocks/core__cover__video.html
index eb50abcb28cf3..96c1c72ea3411 100644
--- a/packages/e2e-tests/fixtures/blocks/core__cover__video.html
+++ b/packages/e2e-tests/fixtures/blocks/core__cover__video.html
@@ -12,7 +12,7 @@
 	</video>
 	<div class="wp-block-cover__inner-container">
 		<!-- wp:paragraph {"align":"center","placeholder":"Write title…","fontSize":"large"} -->
-		<p style="text-align:center" class="has-large-font-size">
+		<p class="has-text-align-center has-large-font-size">
 			Guten Berg!
 		</p>
 		<!-- /wp:paragraph -->
diff --git a/packages/e2e-tests/fixtures/blocks/core__cover__video.json b/packages/e2e-tests/fixtures/blocks/core__cover__video.json
index f91f443e785e1..c5a5abeda4916 100644
--- a/packages/e2e-tests/fixtures/blocks/core__cover__video.json
+++ b/packages/e2e-tests/fixtures/blocks/core__cover__video.json
@@ -22,7 +22,7 @@
                     "fontSize": "large"
                 },
                 "innerBlocks": [],
-                "originalContent": "<p style=\"text-align:center\" class=\"has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>"
+                "originalContent": "<p class=\"has-text-align-center has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>"
             }
         ],
         "originalContent": "<div\n\tclass=\"wp-block-cover has-background-dim-40 has-background-dim\"\n>\n\t<video\n\t\tclass=\"wp-block-cover__video-background\"\n\t\tautoplay\n\t\tmuted\n\t\tloop\n\t\tsrc=\"data:video/mp4;base64,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\"\n\t>\n\t</video>\n\t<div class=\"wp-block-cover__inner-container\">\n\t\t\n\t</div>\n</div>"
diff --git a/packages/e2e-tests/fixtures/blocks/core__cover__video.parsed.json b/packages/e2e-tests/fixtures/blocks/core__cover__video.parsed.json
index c48b676a2f1c5..7121277dd3b40 100644
--- a/packages/e2e-tests/fixtures/blocks/core__cover__video.parsed.json
+++ b/packages/e2e-tests/fixtures/blocks/core__cover__video.parsed.json
@@ -15,9 +15,9 @@
                     "fontSize": "large"
                 },
                 "innerBlocks": [],
-                "innerHTML": "\n\t\t<p style=\"text-align:center\" class=\"has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>\n\t\t",
+                "innerHTML": "\n\t\t<p class=\"has-text-align-center has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>\n\t\t",
                 "innerContent": [
-                    "\n\t\t<p style=\"text-align:center\" class=\"has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>\n\t\t"
+                    "\n\t\t<p class=\"has-text-align-center has-large-font-size\">\n\t\t\tGuten Berg!\n\t\t</p>\n\t\t"
                 ]
             }
         ],
diff --git a/packages/e2e-tests/fixtures/blocks/core__cover__video.serialized.html b/packages/e2e-tests/fixtures/blocks/core__cover__video.serialized.html
index 5f23cddf2fa1c..5c155d10fa772 100644
--- a/packages/e2e-tests/fixtures/blocks/core__cover__video.serialized.html
+++ b/packages/e2e-tests/fixtures/blocks/core__cover__video.serialized.html
@@ -1,6 +1,6 @@
 <!-- wp:cover {"url":"data:video/mp4;base64,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","dimRatio":40,"backgroundType":"video"} -->
 <div class="wp-block-cover has-background-dim-40 has-background-dim"><video class="wp-block-cover__video-background" autoplay muted loop src="data:video/mp4;base64,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"></video><div class="wp-block-cover__inner-container"><!-- wp:paragraph {"align":"center","placeholder":"Write title…","fontSize":"large"} -->
-<p style="text-align:center" class="has-large-font-size">
+<p class="has-text-align-center has-large-font-size">
 			Guten Berg!
 		</p>
 <!-- /wp:paragraph --></div></div>
diff --git a/packages/e2e-tests/fixtures/blocks/core__media-text__media-right-custom-width.html b/packages/e2e-tests/fixtures/blocks/core__media-text__media-right-custom-width.html
index 45252b7a306b8..57b21c9f28991 100644
--- a/packages/e2e-tests/fixtures/blocks/core__media-text__media-right-custom-width.html
+++ b/packages/e2e-tests/fixtures/blocks/core__media-text__media-right-custom-width.html
@@ -5,7 +5,7 @@
 	</figure>
 	<div class="wp-block-media-text__content">
 		<!-- wp:paragraph {"align":"right","placeholder":"Content…","fontSize":"large"} -->
-		<p style="text-align:right" class="has-large-font-size">My video</p>
+		<p class="has-text-align-right has-large-font-size">My video</p>
 		<!-- /wp:paragraph -->
 	</div>
 </div>
diff --git a/packages/e2e-tests/fixtures/blocks/core__media-text__media-right-custom-width.json b/packages/e2e-tests/fixtures/blocks/core__media-text__media-right-custom-width.json
index c31ac7581e255..ca372909502ba 100644
--- a/packages/e2e-tests/fixtures/blocks/core__media-text__media-right-custom-width.json
+++ b/packages/e2e-tests/fixtures/blocks/core__media-text__media-right-custom-width.json
@@ -25,7 +25,7 @@
                     "fontSize": "large"
                 },
                 "innerBlocks": [],
-                "originalContent": "<p style=\"text-align:right\" class=\"has-large-font-size\">My video</p>"
+                "originalContent": "<p class=\"has-text-align-right has-large-font-size\">My video</p>"
             }
         ],
         "originalContent": "<div class=\"wp-block-media-text alignfull has-media-on-the-right\" style=\"grid-template-columns:auto 41%\">\n\t<figure class=\"wp-block-media-text__media\">\n\t\t<video controls src=\"data:video/mp4;base64,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\"></video>\n\t</figure>\n\t<div class=\"wp-block-media-text__content\">\n\t\t\n\t</div>\n</div>"
diff --git a/packages/e2e-tests/fixtures/blocks/core__media-text__media-right-custom-width.parsed.json b/packages/e2e-tests/fixtures/blocks/core__media-text__media-right-custom-width.parsed.json
index ee577a366f0f8..6939ba85e95b8 100644
--- a/packages/e2e-tests/fixtures/blocks/core__media-text__media-right-custom-width.parsed.json
+++ b/packages/e2e-tests/fixtures/blocks/core__media-text__media-right-custom-width.parsed.json
@@ -16,9 +16,9 @@
                     "fontSize": "large"
                 },
                 "innerBlocks": [],
-                "innerHTML": "\n\t\t<p style=\"text-align:right\" class=\"has-large-font-size\">My video</p>\n\t\t",
+                "innerHTML": "\n\t\t<p class=\"has-text-align-right has-large-font-size\">My video</p>\n\t\t",
                 "innerContent": [
-                    "\n\t\t<p style=\"text-align:right\" class=\"has-large-font-size\">My video</p>\n\t\t"
+                    "\n\t\t<p class=\"has-text-align-right has-large-font-size\">My video</p>\n\t\t"
                 ]
             }
         ],
diff --git a/packages/e2e-tests/fixtures/blocks/core__media-text__media-right-custom-width.serialized.html b/packages/e2e-tests/fixtures/blocks/core__media-text__media-right-custom-width.serialized.html
index 857ad7de389cd..2c2923b7ecf25 100644
--- a/packages/e2e-tests/fixtures/blocks/core__media-text__media-right-custom-width.serialized.html
+++ b/packages/e2e-tests/fixtures/blocks/core__media-text__media-right-custom-width.serialized.html
@@ -1,5 +1,5 @@
 <!-- wp:media-text {"align":"full","mediaPosition":"right","mediaType":"video","mediaWidth":41} -->
 <div class="wp-block-media-text alignfull has-media-on-the-right" style="grid-template-columns:auto 41%"><figure class="wp-block-media-text__media"><video controls src="data:video/mp4;base64,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"></video></figure><div class="wp-block-media-text__content"><!-- wp:paragraph {"align":"right","placeholder":"Content…","fontSize":"large"} -->
-<p style="text-align:right" class="has-large-font-size">My video</p>
+<p class="has-text-align-right has-large-font-size">My video</p>
 <!-- /wp:paragraph --></div></div>
 <!-- /wp:media-text -->
diff --git a/packages/e2e-tests/fixtures/blocks/core__paragraph__align-right.html b/packages/e2e-tests/fixtures/blocks/core__paragraph__align-right.html
index d41481a57f2e5..e95db5b155454 100644
--- a/packages/e2e-tests/fixtures/blocks/core__paragraph__align-right.html
+++ b/packages/e2e-tests/fixtures/blocks/core__paragraph__align-right.html
@@ -1,3 +1,3 @@
 <!-- wp:core/paragraph {"align":"right"} -->
-<p style="text-align:right;">... like this one, which is separate from the above and right aligned.</p>
+<p class="has-text-align-right">... like this one, which is separate from the above and right aligned.</p>
 <!-- /wp:core/paragraph -->
diff --git a/packages/e2e-tests/fixtures/blocks/core__paragraph__align-right.json b/packages/e2e-tests/fixtures/blocks/core__paragraph__align-right.json
index 2ab7bad89f192..d0c3fa1495e3d 100644
--- a/packages/e2e-tests/fixtures/blocks/core__paragraph__align-right.json
+++ b/packages/e2e-tests/fixtures/blocks/core__paragraph__align-right.json
@@ -9,6 +9,6 @@
             "dropCap": false
         },
         "innerBlocks": [],
-        "originalContent": "<p style=\"text-align:right;\">... like this one, which is separate from the above and right aligned.</p>"
+        "originalContent": "<p class=\"has-text-align-right\">... like this one, which is separate from the above and right aligned.</p>"
     }
 ]
diff --git a/packages/e2e-tests/fixtures/blocks/core__paragraph__align-right.parsed.json b/packages/e2e-tests/fixtures/blocks/core__paragraph__align-right.parsed.json
index a8f850f47f72b..61859738751fb 100644
--- a/packages/e2e-tests/fixtures/blocks/core__paragraph__align-right.parsed.json
+++ b/packages/e2e-tests/fixtures/blocks/core__paragraph__align-right.parsed.json
@@ -5,9 +5,9 @@
             "align": "right"
         },
         "innerBlocks": [],
-        "innerHTML": "\n<p style=\"text-align:right;\">... like this one, which is separate from the above and right aligned.</p>\n",
+        "innerHTML": "\n<p class=\"has-text-align-right\">... like this one, which is separate from the above and right aligned.</p>\n",
         "innerContent": [
-            "\n<p style=\"text-align:right;\">... like this one, which is separate from the above and right aligned.</p>\n"
+            "\n<p class=\"has-text-align-right\">... like this one, which is separate from the above and right aligned.</p>\n"
         ]
     },
     {
diff --git a/packages/e2e-tests/fixtures/blocks/core__paragraph__align-right.serialized.html b/packages/e2e-tests/fixtures/blocks/core__paragraph__align-right.serialized.html
index 3e18265b5c44b..3009f606904f6 100644
--- a/packages/e2e-tests/fixtures/blocks/core__paragraph__align-right.serialized.html
+++ b/packages/e2e-tests/fixtures/blocks/core__paragraph__align-right.serialized.html
@@ -1,3 +1,3 @@
 <!-- wp:paragraph {"align":"right"} -->
-<p style="text-align:right">... like this one, which is separate from the above and right aligned.</p>
+<p class="has-text-align-right">... like this one, which is separate from the above and right aligned.</p>
 <!-- /wp:paragraph -->
diff --git a/packages/e2e-tests/fixtures/blocks/core__paragraph__deprecated-4.html b/packages/e2e-tests/fixtures/blocks/core__paragraph__deprecated-4.html
new file mode 100644
index 0000000000000..d41481a57f2e5
--- /dev/null
+++ b/packages/e2e-tests/fixtures/blocks/core__paragraph__deprecated-4.html
@@ -0,0 +1,3 @@
+<!-- wp:core/paragraph {"align":"right"} -->
+<p style="text-align:right;">... like this one, which is separate from the above and right aligned.</p>
+<!-- /wp:core/paragraph -->
diff --git a/packages/e2e-tests/fixtures/blocks/core__paragraph__deprecated-4.json b/packages/e2e-tests/fixtures/blocks/core__paragraph__deprecated-4.json
new file mode 100644
index 0000000000000..2ab7bad89f192
--- /dev/null
+++ b/packages/e2e-tests/fixtures/blocks/core__paragraph__deprecated-4.json
@@ -0,0 +1,14 @@
+[
+    {
+        "clientId": "_clientId_0",
+        "name": "core/paragraph",
+        "isValid": true,
+        "attributes": {
+            "align": "right",
+            "content": "... like this one, which is separate from the above and right aligned.",
+            "dropCap": false
+        },
+        "innerBlocks": [],
+        "originalContent": "<p style=\"text-align:right;\">... like this one, which is separate from the above and right aligned.</p>"
+    }
+]
diff --git a/packages/e2e-tests/fixtures/blocks/core__paragraph__deprecated-4.parsed.json b/packages/e2e-tests/fixtures/blocks/core__paragraph__deprecated-4.parsed.json
new file mode 100644
index 0000000000000..a8f850f47f72b
--- /dev/null
+++ b/packages/e2e-tests/fixtures/blocks/core__paragraph__deprecated-4.parsed.json
@@ -0,0 +1,22 @@
+[
+    {
+        "blockName": "core/paragraph",
+        "attrs": {
+            "align": "right"
+        },
+        "innerBlocks": [],
+        "innerHTML": "\n<p style=\"text-align:right;\">... like this one, which is separate from the above and right aligned.</p>\n",
+        "innerContent": [
+            "\n<p style=\"text-align:right;\">... like this one, which is separate from the above and right aligned.</p>\n"
+        ]
+    },
+    {
+        "blockName": null,
+        "attrs": {},
+        "innerBlocks": [],
+        "innerHTML": "\n",
+        "innerContent": [
+            "\n"
+        ]
+    }
+]
diff --git a/packages/e2e-tests/fixtures/blocks/core__paragraph__deprecated-4.serialized.html b/packages/e2e-tests/fixtures/blocks/core__paragraph__deprecated-4.serialized.html
new file mode 100644
index 0000000000000..3009f606904f6
--- /dev/null
+++ b/packages/e2e-tests/fixtures/blocks/core__paragraph__deprecated-4.serialized.html
@@ -0,0 +1,3 @@
+<!-- wp:paragraph {"align":"right"} -->
+<p class="has-text-align-right">... like this one, which is separate from the above and right aligned.</p>
+<!-- /wp:paragraph -->
diff --git a/packages/e2e-tests/specs/__snapshots__/block-transforms.test.js.snap b/packages/e2e-tests/specs/__snapshots__/block-transforms.test.js.snap
index f1d778e920aeb..3288fac0c027a 100644
--- a/packages/e2e-tests/specs/__snapshots__/block-transforms.test.js.snap
+++ b/packages/e2e-tests/specs/__snapshots__/block-transforms.test.js.snap
@@ -79,7 +79,7 @@ exports[`Block transforms correctly transform block Heading in fixture core__hea
 exports[`Block transforms correctly transform block Image in fixture core__image into the Cover block 1`] = `
 "<!-- wp:cover {\\"url\\":\\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==\\"} -->
 <div class=\\"wp-block-cover has-background-dim\\" style=\\"background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==)\\"><div class=\\"wp-block-cover__inner-container\\"><!-- wp:paragraph {\\"align\\":\\"center\\",\\"placeholder\\":\\"Write title…\\",\\"fontSize\\":\\"large\\"} -->
-<p style=\\"text-align:center\\" class=\\"has-large-font-size\\"></p>
+<p class=\\"has-text-align-center has-large-font-size\\"></p>
 <!-- /wp:paragraph --></div></div>
 <!-- /wp:cover -->"
 `;
@@ -115,7 +115,7 @@ exports[`Block transforms correctly transform block Image in fixture core__image
 exports[`Block transforms correctly transform block Image in fixture core__image__attachment-link into the Cover block 1`] = `
 "<!-- wp:cover {\\"url\\":\\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==\\"} -->
 <div class=\\"wp-block-cover has-background-dim\\" style=\\"background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==)\\"><div class=\\"wp-block-cover__inner-container\\"><!-- wp:paragraph {\\"align\\":\\"center\\",\\"placeholder\\":\\"Write title…\\",\\"fontSize\\":\\"large\\"} -->
-<p style=\\"text-align:center\\" class=\\"has-large-font-size\\"></p>
+<p class=\\"has-text-align-center has-large-font-size\\"></p>
 <!-- /wp:paragraph --></div></div>
 <!-- /wp:cover -->"
 `;
@@ -143,7 +143,7 @@ exports[`Block transforms correctly transform block Image in fixture core__image
 exports[`Block transforms correctly transform block Image in fixture core__image__center-caption into the Cover block 1`] = `
 "<!-- wp:cover {\\"url\\":\\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==\\",\\"align\\":\\"center\\"} -->
 <div class=\\"wp-block-cover aligncenter has-background-dim\\" style=\\"background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==)\\"><div class=\\"wp-block-cover__inner-container\\"><!-- wp:paragraph {\\"align\\":\\"center\\",\\"placeholder\\":\\"Write title…\\",\\"fontSize\\":\\"large\\"} -->
-<p style=\\"text-align:center\\" class=\\"has-large-font-size\\"></p>
+<p class=\\"has-text-align-center has-large-font-size\\"></p>
 <!-- /wp:paragraph --></div></div>
 <!-- /wp:cover -->"
 `;
@@ -171,7 +171,7 @@ exports[`Block transforms correctly transform block Image in fixture core__image
 exports[`Block transforms correctly transform block Image in fixture core__image__custom-link into the Cover block 1`] = `
 "<!-- wp:cover {\\"url\\":\\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==\\"} -->
 <div class=\\"wp-block-cover has-background-dim\\" style=\\"background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==)\\"><div class=\\"wp-block-cover__inner-container\\"><!-- wp:paragraph {\\"align\\":\\"center\\",\\"placeholder\\":\\"Write title…\\",\\"fontSize\\":\\"large\\"} -->
-<p style=\\"text-align:center\\" class=\\"has-large-font-size\\"></p>
+<p class=\\"has-text-align-center has-large-font-size\\"></p>
 <!-- /wp:paragraph --></div></div>
 <!-- /wp:cover -->"
 `;
@@ -199,7 +199,7 @@ exports[`Block transforms correctly transform block Image in fixture core__image
 exports[`Block transforms correctly transform block Image in fixture core__image__custom-link-class into the Cover block 1`] = `
 "<!-- wp:cover {\\"url\\":\\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==\\"} -->
 <div class=\\"wp-block-cover has-background-dim\\" style=\\"background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==)\\"><div class=\\"wp-block-cover__inner-container\\"><!-- wp:paragraph {\\"align\\":\\"center\\",\\"placeholder\\":\\"Write title…\\",\\"fontSize\\":\\"large\\"} -->
-<p style=\\"text-align:center\\" class=\\"has-large-font-size\\"></p>
+<p class=\\"has-text-align-center has-large-font-size\\"></p>
 <!-- /wp:paragraph --></div></div>
 <!-- /wp:cover -->"
 `;
@@ -227,7 +227,7 @@ exports[`Block transforms correctly transform block Image in fixture core__image
 exports[`Block transforms correctly transform block Image in fixture core__image__custom-link-rel into the Cover block 1`] = `
 "<!-- wp:cover {\\"url\\":\\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==\\"} -->
 <div class=\\"wp-block-cover has-background-dim\\" style=\\"background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==)\\"><div class=\\"wp-block-cover__inner-container\\"><!-- wp:paragraph {\\"align\\":\\"center\\",\\"placeholder\\":\\"Write title…\\",\\"fontSize\\":\\"large\\"} -->
-<p style=\\"text-align:center\\" class=\\"has-large-font-size\\"></p>
+<p class=\\"has-text-align-center has-large-font-size\\"></p>
 <!-- /wp:paragraph --></div></div>
 <!-- /wp:cover -->"
 `;
@@ -255,7 +255,7 @@ exports[`Block transforms correctly transform block Image in fixture core__image
 exports[`Block transforms correctly transform block Image in fixture core__image__media-link into the Cover block 1`] = `
 "<!-- wp:cover {\\"url\\":\\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==\\"} -->
 <div class=\\"wp-block-cover has-background-dim\\" style=\\"background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==)\\"><div class=\\"wp-block-cover__inner-container\\"><!-- wp:paragraph {\\"align\\":\\"center\\",\\"placeholder\\":\\"Write title…\\",\\"fontSize\\":\\"large\\"} -->
-<p style=\\"text-align:center\\" class=\\"has-large-font-size\\"></p>
+<p class=\\"has-text-align-center has-large-font-size\\"></p>
 <!-- /wp:paragraph --></div></div>
 <!-- /wp:cover -->"
 `;
@@ -363,7 +363,7 @@ exports[`Block transforms correctly transform block Media & Text in fixture core
 exports[`Block transforms correctly transform block Paragraph in fixture core__paragraph__align-right into the Group block 1`] = `
 "<!-- wp:group -->
 <div class=\\"wp-block-group\\"><div class=\\"wp-block-group__inner-container\\"><!-- wp:paragraph {\\"align\\":\\"right\\"} -->
-<p style=\\"text-align:right\\">... like this one, which is separate from the above and right aligned.</p>
+<p class=\\"has-text-align-right\\">... like this one, which is separate from the above and right aligned.</p>
 <!-- /wp:paragraph --></div></div>
 <!-- /wp:group -->"
 `;
@@ -489,7 +489,7 @@ exports[`Block transforms correctly transform block Verse in fixture core__verse
 exports[`Block transforms correctly transform block Video in fixture core__video into the Cover block 1`] = `
 "<!-- wp:cover {\\"url\\":\\"data:video/mp4;base64,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\\",\\"backgroundType\\":\\"video\\"} -->
 <div class=\\"wp-block-cover has-background-dim\\"><video class=\\"wp-block-cover__video-background\\" autoplay muted loop src=\\"data:video/mp4;base64,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\\"></video><div class=\\"wp-block-cover__inner-container\\"><!-- wp:paragraph {\\"align\\":\\"center\\",\\"placeholder\\":\\"Write title…\\",\\"fontSize\\":\\"large\\"} -->
-<p style=\\"text-align:center\\" class=\\"has-large-font-size\\"></p>
+<p class=\\"has-text-align-center has-large-font-size\\"></p>
 <!-- /wp:paragraph --></div></div>
 <!-- /wp:cover -->"
 `;
diff --git a/post-content.php b/post-content.php
index 032c4ad10be6a..1a5014c061a2e 100644
--- a/post-content.php
+++ b/post-content.php
@@ -8,7 +8,7 @@
 ?>
 <!-- wp:cover {"url":"https://cldup.com/Fz-ASbo2s3.jpg","className":"alignwide"} -->
 <div class="wp-block-cover has-background-dim alignwide" style="background-image:url(https://cldup.com/Fz-ASbo2s3.jpg)"><div class="wp-block-cover__inner-container"><!-- wp:paragraph {"align":"center","placeholder":"Write title…","fontSize":"large"} -->
-<p style="text-align:center" class="has-large-font-size"><?php _e( 'Of Mountains &amp; Printing Presses', 'gutenberg' ); ?></p>
+<p class="has-text-align-center has-large-font-size"><?php _e( 'Of Mountains &amp; Printing Presses', 'gutenberg' ); ?></p>
 <!-- /wp:paragraph --></div></div>
 <!-- /wp:cover -->
 
@@ -21,7 +21,7 @@
 <!-- /wp:paragraph -->
 
 <!-- wp:paragraph {"align":"right"} -->
-<p style="text-align:right"><?php _e( '... like this one, which is right aligned.', 'gutenberg' ); ?></p>
+<p class="has-text-align-right"><?php _e( '... like this one, which is right aligned.', 'gutenberg' ); ?></p>
 <!-- /wp:paragraph -->
 
 <!-- wp:paragraph -->
@@ -156,7 +156,7 @@
 <!-- /wp:pullquote -->
 
 <!-- wp:paragraph {"align":"center"} -->
-<p style="text-align:center">
+<p class="has-text-align-center">
 	<em>
 		<?php
 		echo sprintf(
@@ -178,9 +178,9 @@
 <!-- /wp:separator -->
 
 <!-- wp:paragraph {"align":"center"} -->
-<p style="text-align:center"><?php _e( 'Thanks for testing Gutenberg!', 'gutenberg' ); ?></p>
+<p class="has-text-align-center"><?php _e( 'Thanks for testing Gutenberg!', 'gutenberg' ); ?></p>
 <!-- /wp:paragraph -->
 
 <!-- wp:paragraph {"align":"center"} -->
-<p style="text-align:center">👋</p>
+<p class="has-text-align-center">👋</p>
 <!-- /wp:paragraph -->